Chapter II: Boats, Rafts, and Make-Shift Floats (2)

"Of course there must be an opening between the deck planks, to allow of its rise. Such a boat will carry at least a ton and a half of cargo, if made sufficiently flat in the bottom, and it will require a very stiff breeze and large sail even then to submerge the lee boat. There is this advantage, too, that it cannot be done so quickly as to prevent the remedy by luffing up or otherwise with ordinary vigilance. Your goods and tarpaulins will be quite safe 6in. above the gunwale.

"Yours very truly,

"Charles Bell."

Just before returning from South Africa we found that the clever author of "A Painter's Camp in the Highlands" had also gone through nearly the same course of experiments, and had arrived, like us, at the conclusion that the double form of boat was the most safe, convenient, portable, and roomy on deck; and also that it was objectionable to have the inner sides rounded, for the reasons before given. He therefore finally adopted the flat inner side, and making his boats 30ft. in length and 4ft. apart at the stem, increased the width to 4ft. 1in. aft, so as to let the inclosed body of water glide away more easily. He found, however, that after working out his own idea for his own use, he was served with a notice for infringing a patent of which he had not previously heard; and in like manner, after our return from Africa, a description of a patent tubular life raft was submitted to Captain George, at the Royal Geographical Society, and he immediately saw that this was nearly identical with our own plan.

{Making inflatable boats safe.}

About 1853, a friend in Graham's Town, with whom we left our model of the inflatable boat, subsequently used in Australia (see p. 48), made one for his own amusement, on a small river. He had but two tubes, each of them with a flat side toward the centre, with a small platform between raised on crossed struts, one pair of which on each side were very ingeniously made to carry the rowlocks, as in the next sketch (Fig. 9). And, as he was doubtful of keeping the canvas of his boats sufficiently air-tight, he either filled them, or proposed to do so, with the bladders of oxen previously inflated, so that, even were air to escape from the tubes which formed the boats, they could not collapse. This, in itself, would be a hint which a traveller, who must either shoot game or kill domestic animals for his followers, would do well to bear in mind.

{Skiff of iron or copper.}

Iron, whether plain or galvanised, is sold in sheets of 2ft. by 6ft., while those of copper are 2ft. by 4ft. We recommend only the copper; but economic or other reasons may very possibly compel the traveller to use iron.

We have, for facility of construction, chosen the form of a Norwegian praam, or wherry, with both ends alike. A semicircular section slightly flattened at the bottom, without a keel, and rising with an easy sheer to a sharp point at either end.

Eleven sheets of iron would be required; the central one being left of its original shape and size, while the five at either end are cut to the forms shown by the outer lines, and to the dimensions indicated by the figures marked along the lower edge: thus, in No. 1, from the centre there is no perceptible curve along the 6-foot side, but the ends are sloped off, with straight although diagonal lines, so that the side nearest the centre remains 6ft., while the farthest is reduced to 5ft. 9in.

In the next sheet, or No. 2, the side nearest the centre curves very slightly; the segment taking off only one inch at either end, the curved side (supposing we are now working from the centre forward) overlaps the edge of No. 1 two inches, and it is therefore cut, not to 5ft. 9in., but to 5ft. 10in., as No. 1 would be of that breadth, a couple of inches back; the front side is left straight, but is reduced in breadth to 5ft. 5in., and the after side of No. 3 is so much more curved that the segment cuts off three inches. The figures in the diagram will render the progressive diminution to the end sufficiently plain. It will be seen that the end remains one foot wide; this is usually filled in with a semicircular piece of plank, being quite sharp enough for all practical purposes, and affording room for a rowlock for a steering or sculling oar, or for a hole through which the boat's painter may be passed. But, if desired, another piece of iron, which may be called sheet No. 6, may very easily be let in to continue the curve quite up to a point, as in the dotted end of Fig. 2. The half section is given on the side marked iron of Fig. 3, the outer line standing for the two edges of the central sheet, where the skiff is 4ft. wide and 1ft. 10in. deep. The next line, 1-1/2in. smaller all round, is the section at the overlap of sheets Nos. 1 and 2; the third line, two inches within the last, is at the edges of Nos. 2 and 3; the fourth, three inches smaller, is at the contact of Nos. 3 and 4; the fifth, six inches less, is at Nos. 4 and 5; and the sixth, diminishing by nine inches, is the end of No. 5, which is filled in by a semicircle of plank about five inches in diameter.

The eleven sheets laid side by side would, of course, present a length of 22ft., but the overlap and the segment of the curve cut from those near the ends would reduce the length of the boat to 19ft.

Our diagram is on a scale of a quarter of an inch to a foot, but this is somewhat small for the needful accuracy; therefore if anyone intends to build, we would advise him to copy it on a scale of at least one inch to a foot, in which case the halves will represent six inches and the quarters three, and if he has a rule divided to one-twelfths, his work will be much facilitated.

It would be better to make, as we have done in preparing this description, a model block on which to test his work; indeed we would advise this in all cases of intended boat building. If the boat is to have a bow and stern distinct from each other, the model must be of the whole length, but may be of only half the breadth. If both ends are to be alike, it may be half the length and breadth, or one quarter of the boat.

In the present instance, take a piece of deal, as clean and straight-grained as possible, 19in. long (or 21in. if you wish the ends to come to a point), 4in. wide, and 3in. deep. Having smoothed this, draw a line along the centre of the top and bottom, connecting them by perpendiculars at the two ends; then on the top set off the line of one-quarter of the gunwale, or outer line, taking the breadths from the section in Fig. 3 (p. 119), and their distances from the centre, from the elevation in Fig. 2 (p. 119), bearing in mind that the centre means not either of the edges, but the middle of that marked as the central sheet. It will save trouble to cut out a piece of card to the size of this quarter, and trace the corresponding ones on the top and bottom of your block; then copy the elevation given in Fig. 2, and trace this, as before, on both sides. Now fix the block, with one end up in a bench vice, and with a narrow frame saw cut along the gunwale lines nearly to the centre, but do not cut them quite off, or you will lose your elevation lines (if a friend helps you by guiding the other end of the saw to the line on his side, you will be more certain to cut truly); then turn the block one-quarter round, and cut the line at top and bottom. Now place the other end uppermost, and repeat the process; and lastly, finish the cuts, and detach the superfluous pieces.

Take a piece of card or thin stuff, and draw on it the midship section, and cut this away, leaving a corresponding hollow; round off the edges of your model until she fits this hollow, and of this size 2in. of the centre must be left. Do the same with the diminishing sections, forward and aft; then cut eleven sheets of card 2in. by 6in., mark a central line across each, and also along the bottom of the model; lay one sheet uncut across the midship section, and tack it there; mark each of the others after the outlines given in the diagram (Fig. 1, p. 119), but test them in their places before cutting them. Take care also that as you go forward each sheet overlaps that which is behind; but as you work aft, insert the front edge under the one before it. You may think this operation would be tedious; but having once gone through it, you will build your full-sized boat with confidence. And let us again assure you that time spent in obtaining a preliminary certainty of your plan is saved over and over again when you come to actual work.

The sheets having been cut to the proper shape, set the two points of the gauge 1/4in. apart, and so that the centre of the space between them shall be exactly 1in. from the shoulder, and gauge these lines all round the sheets, then, commencing from the centre of the longest side, mark off spaces of 3in., and with a flat-ended punch, and a dolly or matrix, or, in lack of that, a hard block of end wood, drive 1/4in. holes on all the sides except those which are cut with a curve. Then lay the centre sheet on the rib or mould, which, like the rough frame on which bricklayers construct an arch, gives it its proper curve, and, under one edge, lay the curved edge of the next sheet. Mark where the holes should come; remove it and punch them, and fasten the two sheets together temporarily with three or more of the screw bolts. Do the same with the successive sheets towards each end, and you will find that the copper shell, even without ribs or strengthening of any kind, will assume its proper form and will be tolerably stiff. If the sheets are truly cut, the result may be attained, even without a mould, by driving one hole in the centre of the curved side, bolting it to the straight edge of the other sheet, and then bending both round till the curved edge coincides with the straight one. In this condition you may decide on increasing the width of your boat by forcing the sides farther apart; this will increase her sheer or elevation at either end, and will diminish her depth, or you may incline to reduce her beam, which will give her greater depth and will reduce the sheer till the elevation of the gunwale presents nearly a straight line. It would be better, however, if circumstances permitted, to adhere very nearly to the form given in the drawing, and set up such a frame for working on as is shown in the illustration on the next page.

Drive as many rough stakes into the ground as the number of sheets in your intended boat requires. Let these near the centre be three and a half or four feet high, and these at the ends slightly lower. Stretch a chalk line fore and aft, and see that all their centres are in true alignment and 1ft. 10in. apart. The line should be fastened to two posts in the same line as, but beyond these required for, the boat. Let it come low enough just to touch the central posts, then measure downwards from the line the amount necessary to be cut off those towards the ends, so as to give the proper sheer. Next, commencing from the centre, face off with a saw, or otherwise, as much of each post as is needful to let each frame lie truly against it, noticing that as the bottom of each is farther from the next than the top or part near the gunwale, it is more convenient to face that side of the post which looks towards the centre; then, with any rough slabs or planks, form two moulds the exact size and form of your midship section, just as bricklayers would do if they were building an arch. Nail these to their proper supports, and on them bend the strips, 2in. broad by 1/4in. thick, you intend for ribs, letting only one edge rest on the mould, while the other projects so far that you may have clear space to bore through the centre the holes for your screw-bolts. Do the same with all the others towards the two ends, confining them with a temporary ribband where the gunwale is afterwards to be; or, still better, leaving their ends 6in. too long, so that this ribband may not interfere with the completion of the boat. Have a chalk line stretched near the ground, along either side, parallel with the centre one above, so that any deviation from the proper form can be measured and corrected. Then lay on the sheets, insert the bolts, and screw them up, adding a keel or centre batten, bilge streaks, and gunwales, externally, and bottom boards to prevent the occupant treading on the copper, and stringers for the thwarts inside. The projecting ends of the ribs can be left where required for rowlocks, or cut off where they are not.

The same process, with attention to the different dimensions, will make you a copper boat, consisting of nine sheets, 2ft. by 4ft.; and this will be 16ft. long, 3ft. 3in. wide, and 10in. deep; but if the gunwales were made of plank, 4-1/2in. wide, or half the width of a deal, the skiff would be quite deep enough to carry three or four persons in moderately smooth water.

If you wish to build the same boat of wood, 3/8in. planks (not more than 4in. wide) will be stout enough. The lines radiating from the centre in the sectional drawing are given for the purpose of showing the progressive diminution of the planks in width, from the central section towards each end. These should be tested by cutting strips of card and tacking them, like planks, on the block that serves as your model.

This would be a very handy form for a dingy for the traveller's personal use, as it might be taken to pieces, and the sheets laid flat, occupying a space of 2ft. by 4in. in extent, and less than 1in. in depth, or they might be rolled up in three bundles, of which each must weigh less than 24lb., as the weight of the whole nine sheets of copper before being cut would be only 72lb. The screw-bolts would weigh probably more than the sheeting, but they could be divided into packets of any convenient weight for carriage by native porters or otherwise; and we should think that half a day would be quite sufficient to put the whole together when wanted, or take it apart when done with. The boat would pull or paddle, and would sail well enough off the wind, but would not compete with a keeled boat close hauled; if the iron sheets were used, she would, of course, be larger and heavier, and the material would be less portable.

In the boat built for Mr. E. D. Young, for use on the Shire river and Lake Nyassa, thin sheets of steel were at first proposed, but as these could not be readily obtained, the best iron was used, and the edges of these being turned upward and inward, formed the ribs of the boat, each sheet being connected by bolts passing through this inward edge to the next sheets before and behind it. This form of construction combines all the elements of lightness, simplicity, and strength; but we do not recommend it to a traveller who has to work up his own material, because none but a skilled workman could turn inward a broad segment of a sheet of metal, the outer surface of which has to present a curve. If anyone doubts this, let him try it by folding half an inch of the edge of a sheet of paper to a right angle with the other part, he will then find it impossible for him to impart a curvature to the sheet without tearing the upturned edge if he bends it outward, or wrinkling it if he gives the contrary curve. If he wished to adopt this form of joining the parts, his plan would be to cut up his sheets of copper into planks 4ft. long, and 8in. broad, then gauging a line all round 2in. within the edge, cut out the squares at the four corners and turn up the borders all round, he would thus have out of one sheet of copper 4ft. by 2in., three planks 4in. wide, and 3ft. 8in. in length, a waste of material that hardly any circumstance could justify.

{Metal boats.}

In 1858 we made a model of a metal boat, about thirty feet long, by six feet beam, to carry a crew of sixteen men, each of whom, when it was taken to pieces, should not find his share of the load to exceed 50lb. each of the thwarts; and the bow and stern sheets were continued downward so as to form a water-tight box, the lower outline of which coincided with the section of the boat, so as to supply the place of ribs and convert her into a lifeboat. Indeed, we would advise that in all metal boats some such portions should assume the form of lockers or of reservoirs of air, so that, should the boat be swamped or become leaky, she might not sink even when filled with water.

Our model was approved by Captain Washington, R.N., the Secretary at that time of the Lifeboat Institution, and the builder to whom we submitted it estimated the weight of the sheet copper and bolts of the same to be employed in the hull at 260lb. and the cost at 60_l._, while the internal fittings, somewhat less in weight, would cost 40_l._ This expense Dr. Livingstone considered to be too great; but, when we reached the Zambesi, it was a matter of frequent regret that we had not some form of boat portable enough to be carried over rough country to rivers we wished to explore.

One of the most beautiful little vessels we ever saw was built by the wrecked crew of a French steamer. She was 40ft. long and 8ft. or 10ft. beam, clinker-built, with thin and narrow planks, without a joint in their whole length, sawed out of the mainmast, and flexible ribs about a foot apart and not more than one inch in breadth or thickness. Her deck beams were, of course, somewhat more rigid, to sustain the weight of the men who crowded her. She was said to have sailed eleven knots.

{Wattled boat.}

Our friend, Mr. Wilson, an experienced African traveller, recommends a wattled or basket-work boat, and in a country where rattans, osiers, or flexible twigs, or green reeds, are obtainable, such a boat would be both light and durable; but it would be open to objection on the score of unavoidable roughness, and inequality of outer surface, which would impede its progress through the water, and expose parts of the canvas covering to constant liability to chafe whenever it touched the ground. Even if a traveller intends to purchase or hire native canoes, it is indispensable that he should have some small portable boat of his own, sufficient at least to show the natives that he is not totally helpless on the water and dependent on them.

In the case of our copper boat, illustrated at page 53, we have already remarked that the difficulties of the road, and the mortality among Mr. Chapman's cattle, obliged us to leave behind eight of the sections. The method we adopted with the other four is shown in our full-page illustration, representing boat-building on the Logier River.

On account of the danger from the tsetse, or poisonous cattle fly, our friend's waggons could not be taken to the banks of the Zambesi, and everything had to be carried by the Damara servants and hired natives to Logier Hill, about eighty miles below the Victoria Falls, which we had selected as the first place from which continuous downward navigation was possible.

The building of the house will come more properly under its own heading, and we will now only treat of what concerns the boat.

About the 3rd of October, or towards the close of the dry season, we cut down a motchicheerie tree, which divided a little above the ground into two tolerably straight logs of manageable dimensions. These were first notched with the axe on the side we intended to "fall" them; the cross-cut saw was then "put in" as far as it would go without nipping from the pressure of the wood, and a notch being made on the other side, the saw was used freely, the weight of the tree on the "falling" side opening the cut as the work proceeded.

Fresh reports, however, caused us much uncertainty whether the Falls of "Moambwa," or the rocks, were not still below the station, and some time was therefore spent in exploring the river down to Sinamane's Island, when, having ascertained that the rapids and other difficulties appeared not quite impracticable, we set up the bow and stern sections of one boat, connecting them by the ribbands of red deal we had been able to carry up, and fitting at short intervals a series of frames on central posts, as described at p. 122, and further supported by shorter posts on either side, in a line with the gunwale streak, testing the accuracy of all parts where correctness was required with plumb line and level, and leaving the rest rough.

Our bench consisted of ten stakes, nearly 3ft. high, driven into the ground, and two long straight poles laid fore and aft in their forks; smaller poles were laid across these as closely as possible, and lashed with the inner bark of the young branches of the "kookomboyon"--a kind of stercuhia, which, while still moist, answers very well, but becomes brittle in drying. The large smith's vice was firmly lashed to the stoutest upright with raw hide, and forked poles were set diagonally to resist the forward strain to which the bench was subject when wood was being planed up.

It was just possible to get thin poles that would bend, but none were sufficiently flexible to take the true curve required for the ribs, and at the same time strong enough to bear the strain when they became dry. Therefore we had to cut crooks out of the motchicheeries, the wood of which looked something like coarse short-grained cedar; and first burning away the light stuff from the tree cut down a month ago, we found a great many available forks and curves.

We had great difficulty in selecting wood of a suitable size for plank; trees too small, or too crooked, or of unsuitable wood, were in abundance; while those of the wood we wanted were mostly too large and unmanageable. Sometimes, at a distance, one would appear to be small enough, but when we came near it would prove three or four feet thick and sixty or eighty feet high, and had only seemed small by comparison with those around it. One group of motchicheeries had grown to maturity, throwing a wide-spread shadow around them; and a young sapling had shot straight up from near their roots towards the air and light; this was 9in. thick at the base, and 4in. at nearly 30ft. up; it proved impossible to "fall" the top outward, and it was very difficult to clear from the other trees. We would have saved labour by floating it down stream to our building-yard, but the wet season was coming on, and the sap had by this time risen in the wood, so that a small piece sunk when thrown into the water. The labour of sinking a saw-pit would have been great, and besides this the expected rains would have kept it always wet. We therefore erected trestles of primitive construction; two triangles of forked poles, 6-1/2ft. long, supported the ends of a stout cross-beam, firmly lashed to them with buffalo hide, and for greater security lashed also to the stem of a tree. The second trestle was destitute of this support, and therefore had to be shored by longer poles, the forks of which took the necks of the opposite triangles, while their hands were stopped by wedges driven into the ground; for additional firmness, lashings were passed at the points of intersection. Two stout poles were laid fore and aft upon the trestles, and shorter pieces across served to rest the log upon; there was some difficulty in lining the lower side, but by cutting notches in the cross-pieces large enough to let the chalk line pass freely, and "springing" it only by short lengths at a time, this was accomplished. It was difficult to teach a young Dutch lad, strong as an ox, and nearly as stolid, to saw with us; but at length the "sapling" was cut, and one of the larger logs lifted gradually up by forming an inclined plane with strong poles, and supporting it whenever we gained a few inches of elevation by forks of various lengths lying ready for that purpose. This having been felled before the sap was up proved much easier to saw, and we had so far overcome the difficulties in our way, that we had commenced laying the bottom plank of the first boat, when the difficulty of providing food, owing to the retreat of the wild animals to the pools which the rainy season was filling all over the desert, and the fever among the people, seven Damaras, mostly women and children, having died in Chapman's camp, and one of the most useful men in ours, obliged us, for the sake of saving the rest, to retreat to the highlands of the desert, and on the 3rd of February, 1863, we hauled down our colours at Logier Hill, and commenced our return journey.

{General hints on boat building.}

Two general rules in boat building should be borne in mind. First, that clumsiness is not necessarily strength; and, secondly, that it is much easier to build a sharp swift boat with moderate sheer, and clear lines of entrance and run, than a short one with great beam, bluff bows, and wide overhanging stern. The stem and stern post should rake considerably, or even form parts of a curved line connected by the keel, as if they are made too upright, not only is the boat more difficult to steer when sudden alteration of the course is necessary, but, if she is built of wood, so much curvature is required in the ends of the planks that it is difficult for an inexperienced hand to lay them. A rudder cannot be nicely fitted to a curved stern-post, but if you decide to steer with one instead of an oar, make the stern-post straight, and if you wish to diminish its "rake" or inclination, make it one foot wide below and only a few inches at the top. A rudder is much more convenient in ordinary cases; but, when great quickness and power is required, nothing is equal to the steering oar.

In constructing a clinker-built boat some practice is required in clinching the nails. First, a hole is bored with a gimlet of such a size that the nail requires some driving, but very little, to force it through. This prevents any lateral curvature, which would be fatal to any attempt at clinching. A roove is then put over the joint and driven home to the surface of the plank, and the end of the nail is nipped off nearly close with a pair of cutting pincers. If you have a spring-handled hammer to screw on to the plank so that the face of it just rests on the head of the nail, so much the better, if not, you must hold your heavy hammer with your left hand or get a mate to do so; while with the edge of your little clinch hammer you tap as sharp and lightly as possible on the centre of the cut end of the nail, causing its sides to overspread the edges of the roove, when it can be nicely smoothed off with the face of the hammer. When one plank has been laid, the outside of its upper edge should be bevelled off so as to let the lower edge of the next lie truly against it in the position required by the curvature of the boat's side; and, to retain it in its place, several pairs of "nippers" should be used. These are made of two pieces of wood--say sixteen inches long and two inches square--cut a mortice 1/2in. wide by 3in. long in each, and pass through them a piece of hard wood fitting the mortice loosely and 12in. long, so as to project 4in. at either end, in each end of this bore three 1/2in. holes, not quite in the central line, but one a little on one side of it, and the next on the other, so as to avoid the risk of splitting two into one; have pegs of hard wood or iron to put through these at the distance you may require, then having adjusted one end of the nippers on the planks you wish to hold together, drive a wedge between the other ends till the grip is tight enough. A pair of these is shown in our illustration at page 106. We believe that the traveller will find it generally most advisable to build his boat bottom upwards.

{Cape-waggon boats.}

We should think that a traveller in South Africa, using the common ox-waggons of the country, might easily, and without additional weight, carry up with him all the wood necessary for the purposes of boat building. The floor or bed-plank of the waggon is about thirty-six inches in width, and from twelve to eighteen feet in length. Four deals might be laid down for this. If they were twenty-one feet long, they would project considerably behind. It is not considered expedient to have the fore and hinder wheels too great a distance apart; but then the projecting ends need not be loaded. The usual holes for the fastenings of a waggon bottom should not be bored in them, but they should be secured by lashings of raw hide, and the parts liable to be chafed should also be protected with the same material. They might be previously sawed into planks or battens of the required size, and then tightly lashed together by thongs of raw hide, especially near the ends, which would otherwise be liable to split with changes of weather and rough usage. The waggon sides are usually a little more than two feet high in front and three or more behind, and the framing of these is an elaborate piece of work. Three deals 9in. wide would give 27in. in height all along. These might be cut into 3/4in. or 1/2in. plank, and again bound up with raw hide, like those of the floor, and thus the traveller would have in one waggon nine deals, or more than sufficient, if he built his boat of copper; while, by raising the sides to 36in. with a couple more, he would have enough to construct her entirely of wood.

In building the waggon-tent or tilt, as it would be called in England, two methods are adopted in the Cape. The first is the kap-tent (E on next page), which is regularly framed by the waggon builder with stanchions about five feet high from the floor, neatly fitted to the sides, at intervals of two feet or thirty inches; with bows of flexible wood, forming a flattened arch about nine inches higher, across them, and fore and aft battens, half-checked in, so that the whole presents a smooth external surface to receive the inner sail, or cover of painted canvas, which is laid on before the outer sail, or snow-white neatly-fitted tilt, is drawn over all. The second is that which any competent waggon driver can extemporise for himself with a sufficient quantity of bamboo split into laths two or three fingers broad, stout Spanish reeds, common hogshead hoops, or an adjacent forest, in which flexible poles can be cut. His first care is to lift and shore up his waggon so as to set free one or both of the hinder wheels, on the circumference of which the flexible rods he intends for his bows are bent and fastened down, and in doing this some care is requisite. The rod must not be grasped by both ends and suddenly forced into the curve, for one part may be weaker than the rest, and it may break there, or be forced into an unsightly prominence; but, after having been steamed, if possible, or, as is more commonly the case, laid for two or three days in water or wet earth, the part intended for the centre of the arch should first be bound tight and flat upon the tire of the wheel, then the ends should be gradually pressed down by two assistants, the principal watching the inequalities of the curvature, and reducing them by passing turns of raw hide tightly over any parts that have a tendency to irregular projections. The bows, which should be about twelve or fourteen feet in total length, are now set up. Care having been taken that the waggon sides stand truly, the front and aftermost are first fixed, and the driver, if a man of average height, stands on the centre of the waggon floor, holding the bow as fairly as he can, with the crown of its arch about the level of his eye, say five feet six from the floor, while his assistants, standing outside, fasten the ends with screws or thongs of raw hide, to the styles or stanchions of the waggon sides. The lifter, the dissel-boom, or other straight and heavy pole, is now laid fore and aft upon the bows to keep them in a level line, and also somewhat to flatten the crown of the arch and expand it laterally. The laths or battens, fore and aft, are now lashed on, and the result is a less sightly but stronger and more durable roof for the exigencies of travel than the kap-tent. In the rear of the tent (letter N) are shown the ribs of an ox or buffalo slung to the roof to hang the saddles on.

Such a tent as either of these might be easily constructed so as to be available for a boat whenever it might be required. First let the stanchions, screwed or lashed to the waggon sides, rise to the usual height of about five feet, and let the bows forming the flattened arch across them be of any flexible material, but preferably of straight-grained ash, such as is used for the better kind of tubs or casks. The hoops of American flour barrels would answer well; they are somewhat thin, but three might be laid together, and would be much more flexible and strong than if one piece only was used.

Of these, supposing nine bows were used, three in the front and three in the rear might be permanently secured to the stanchions, as in the illustration (E, p. 131), while the three central ones should be so fastened as to be readily cast off. The laths or battens, on the contrary, should be securely fastened to the central bows, so as to lift off with them, and only slightly to those at either end.

When the boat is required, it would be but an hour's work to cast off the temporary fastenings. Take off the movable part of the top frame, draw the ends of the battens together, as shown in the illustration (G, p. 131), inserting at pleasure three or four smaller bows at either end, and then taking the under sail--which is generally of oiled canvas--fold down the corners so as to narrow it at either end to the shape of the boat, and stitch or lace it with eyelet-holes to the gunwale. A second thickness of unpainted canvas might always be kept upon the roof between the inner and outer sail; and if this were also laced on the boat, previously reversing the ends of the two parts of canvas, so that if any portions had been chafed while on the waggon they might not coincide with each other, the boat would be as impervious to water as wooden boats generally are.

A few spare laths, previously lashed beneath the front and aftermost bows of the tent, so as to remain there when those required for the boat were removed, and perhaps two or three duplicate bows, would prevent the necessity of leaving the vehicle destitute of cover while the boat was being used.

{Sculling.}

Very often the explorer may find himself alone in a boat, or he may wish to cross a river or pass from ship to shore or back again without calling other men from their duties, and in such cases he who has the power of managing a boat with a single oar, has a great advantage over one who must ask the aid of another. We have been on boat trips where the scientific officers have cheerfully manned the oars and pulled against the stream all night, and when we volunteered to take our turn, the answer was, "No; you can scull, and none of us can. Keep the steering-oar, and help us onward with it." The first great difficulty of the novice is to get the blade of his oar under water and keep it there, and to make the loom rest firmly in the rowlock; the natural tendency of the wood to float will at first seem insuperable, but as soon as he has acquired the proper motion of the wrist he will wonder that he ever had the slightest trouble in keeping the oar to its duty.

To learn to scull, go into a boat that is either fast to the shore or vessel, or have a comrade to pull the other oar with you should you fail. Then stand on the stern-sheets on the starboard side, so that the right hand may be toward the bow of the boat; plant the left foot on the starboard side seat, and advance the right to the middle of the aftermost thwart; grasp the small end of the oar with the right hand, and the loom with the left about eight or ten inches from it, so that when the blade of the oar is horizontal the back of the hands and arms may be uppermost and also in a horizontal line. You will find that when the blade is supported by the water, the loom will not lie in the rowlock; but now depress the wrists a little, raise the hands till the blade forms an angle of 40° or 45° with the horizon, the edge farthest from you being the highest; push the oar from you as far as you can without losing your balance, then, as your first stroke ceases, drop the hands and raise the wrists till the blade inclines as much the other way, the raised edge being then nearest you; pull the loom towards you, bending backwards at the same time as far as you safely can, and you will find the arms in the proper position, with the elbows at the side, the wrists lowered, and the hands ready to rise for the stroke from you. Make short strokes at first, and do not hurry. Never mind which way the boat goes, or whether she goes at all; stick her nose in a mudbank, if you like, till you can keep your oar below the surface, then give her her head; if your oar keeps under water she must go forward, and by making a stronger sweep to starboard or to port, you may steer her at your will. If you have a long narrow boat, she will keep a straight course, but with a short dingy, she will incline at each stroke a little to the right or left, and if you use the oar regularly, her wake will show a series of graceful and equal curves.

In default of an oar, the bottom board may be taken up and used by being laid on the point of the stem, the boat going then stern first. Lightermen, on the Ouse, frequently scull their horse boats in this manner. We have sculled a whale boat with one oar over the quarter, _i.e._, in the crutch of the stroke oar, much as a gondolier does; but tholes or rowlocks cut in the streak above the gunwale would not admit of this. We give no directions for this or for the use of the plank. When the novice can keep his oar blade under water, he can easily learn how to adapt his new power to any emergency.

{Paddling.}

In paddling a canoe sit near the stern, looking forward, and with the paddle on your right side make a long fair stroke; never mind the deviation of her head to the left; but just before you lift your paddle from the water, feather the blade of it by turning the right hand inward from the wrist, turn the right elbow outward, and draw the left hand inward across your breast; this will "port your helm" and bring her to her course again.

If you have a mate who handles another paddle this is less needful; but it is well to learn to paddle your own canoe practically as well as metaphorically, single handed.

The kroomen about Sierra Leone use a canoe pointed at both ends and with a great sheer; this, to a novice, is much more difficult to keep to a true course, but a single krooman tossing his paddle from hand to hand, without missing a stroke, will make her fly direct as an arrow the way he means to go.

In the gunning boats on the Norfolk coasts, when strict silence is not needed, and in canoes of some other countries, a double-bladed paddle is used. The pole is grasped by both hands, like the balance-pole of a rope-dancer, and equal strokes are given alternately, or the course is changed by a more powerful stroke on the other side.

We have occasionally found that the power of handling the native paddle has been of great service, for when we have wished to cross a river to secure some specimen of wading bird, and the bargaining over the hire would have occupied half a day, we have cut the matter short by stepping into the canoe, paddling to the other side, shooting our bird, and making the owners a sufficient present on our return; and, while we advise that all travellers should most scrupulously regard the rights of the natives, we must also intimate that they will not gain the respect of savages by submitting tamely to extortion, or showing themselves in any way afraid to maintain their own.

{Proas.}

The proas, or outrigger canoes, of the Malays and Indian islanders, are so proverbially swift that they have fairly earned the title by which they are generally known, of "flying proas." We have seen and admired many varieties of these, as well as their fan-shaped sails, sometimes of matting--bright and yellow while new, and deepening to browner tints with age, and sometimes of snow-white cotton, or of white alternated with cloths of blue or pink, and gay streamers floating from the bending yards. The most common, and we may almost say the most beautiful of these, were the little proas sailed by one man only, as represented in our sketch. The hull consisted of a single log, perhaps twenty feet in length, and hardly as many inches in depth and breadth; the mast was about six feet in height; and the sail, of triangular form, was laced to a couple of bamboos nearly as long as the canoe; the thick ends of these crossed, and were lashed together at the tack of the sail, and were made fast, loosely enough to give them sufficient play, a little before the mast thwart; a loop attached to the upper bamboo, or yard, at about six feet from the tack, was hitched over a knob on the mast-head, instead of hoisting the sail by halyards, and the sheet was attached by loops like kite loops, or bowline bridles, to the lower bamboo or boom; in hauling to the wind, the simple gathering in of the sheet trimmed the sail nearly down to the gunwale, as seen in the distant proa, while in going free the slackening of it allowed the sail to rise to the wind, till in the distance it reminded us of the beautiful fan-shaped sea-shells, so often found upon the coast. Stability was imparted under this enormous press of sail by two bamboos twelve or fifteen feet long, and from four to six inches thick, kept parallel to the boat at six or eight feet from her sides by two beams of the same lashed across her gunwales, bending slightly downward, but the foremost less so than the after, so that the fore end of the outrigger might be raised slightly above the water, and not impede the boat. The rudder was just like that of our own boats, except in its fittings, which consisted simply of a rope grummet at its neck, by which it could be hitched on to a timber head on either quarter, and we believe it made so little difference that the boatman seldom gave himself the trouble to shift it from one to the other. Of course a tiller was used, as yokes and lines would have been inapplicable. We cannot tell exactly their rate of sailing, but they passed our swift and handy little schooner the "Tom Tough" with ease, even when the breeze was at its freshest. The hull is generally whitened with a mixture of chunam, or coral lime, and cocoa-nut oil, and the raised ends are ornamented with devices in red or green, and sometimes a red streak runs along the side. The tambanga, or waterman's boat for passengers, has more beam, no outrigger, and a smaller though similarly shaped sail.

Some of these proas were much larger, being fifty or more feet in length, and then the sides of the log forming the bottom of the canoe would be raised either by other planks sewn on or by a framework of bamboo, with pieces cross cut from the leaves of the fan-palm, so that the leaf ribs should stand vertically, stitched to them to form the extra height of side, while a roof of the same was built over the centre where cargo would be stowed, or over the after end, to form a kind of cabin. When planks are used for raising the sides, they are not sawn like ours, with economy of time, labour, and material, but are laboriously chopped out of the solid; and, instead of being bent, are patiently dubbed down to the requisite curve with numberless strokes of the keen little Malay adze, projections being left on the inner side through which holes are bored to lash them to the timbers, while rows of holes along the edges admit of their being sewn together with strips of rattan, and shreds of palm leaf laid along the seam and confined by the tightening of the stitches, help to reduce the leakage, which, if the vessel works at all in a sea-way, can never be entirely stopped. They have two large sails similar in form to those of the smaller proas, and sometimes a third, as a mizen. This is small enough to be hitched over the mast-head, as before; but the others have to be hoisted by halyards, and the long yards supported by propping them at some distance from the slings by bamboo poles. The stays were formed of slips of bamboo, and sometimes even of the poles, which, being well fastened, would not only resist tension on the weather-side as well as ropes, but on the lee would, by their rigidity, help to support the masts. The outriggers of these were more elaborately framed with a lighter set of beams, which supported stanchions and hand-rails, so that, when the wind freshened, men might run out upon the weather outrigger and, holding on by the hand-rail and stays, which lead from the mast-head, serve as a counterpoise to the immense sails as the boat dashed through the water. Reefing seemed never to be thought of, and our own men soon got into the habit of speaking of a one-man or two-man breeze, according to the number seen on the weather outriggers of the proas that flew past us. The appearance of these vessels when going wing and wing before the wind was very pretty. And others, in the fashion of the Chinese junk, or in every modification of European, engrafted on native form, afforded picturesque contrast, but need not be here described.

The professional pirate has the outrigger only on the weather-side, and this is frequently a log of light wood trimmed sharp at either end, so that while its specific gravity is small enough to keep it buoyant, it is still so heavy as not to be easily lifted out of the water, like a bamboo, and when requisite, men sent on it, as in the former case, will give it additional weight. But the chief peculiarity is in the hull of the vessel, which is only half a boat, the lee-side being perfectly flat, while the weather, or that toward the outrigger, is rounded as usual; they will be frequently more than fifty feet in length, and six or eight in breadth. We speak of the lee-side, because when the course has to be changed--say in beating to windward--they do not go about like a ship, that must go with her bows forward and be steered from the stern, and therefore turns to receive the wind on the other side. This would be fatal to the proa, as the buoyancy of the outrigger would not prevent her from capsizing; and therefore, while the steersman lets that end which is temporarily her bow fall off from the wind, the men who have charge of the tack run round with it on the platform to windward of the mast, the sheet is brought round to leeward, a steersman takes his place at the other end, and that which has been the stern now becomes the bow, and cleaves the waves at the rate of twenty miles per hour. But no one need fear a proa with a double outrigger, for she is not intended to lay alongside and board.

The engraving represents a proa with an outrigger only on the weather-side; and not only would the sail be made to traverse by shifting the tack to that end which, for the time being, was intended to go foremost, but the mast is also fitted to be inclined forward by slackening that which happens to be the back stay, and tightening that which is _pro tempore_ the fore. Those which serve for shrouds, being exactly abreast of the mast, are so arranged for the purpose of facilitating this.

The commander of the United States Exploring Expedition, Charles Wilkes, U.S.N., gives the following description of the Fejee canoes:--

{Fejee canoes.}